But mostly rock, right? That's what the Patagonia Men's RPS Rock Pant thinks. Polyester and nylon create a light and breathable environment during technical multi-pitch climbs, with articulated patterning keeping the odds in your favor. The pockets are constructed to lie flat and comfortable beneath your harness and placed for easy access. The waist and cuffs of the RPS can be adjusted according to desired bulk, streamlining your way to the top of every route.